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Topic: server sd files logger (Read 1 time) previous topic - next topic

wdvalenz

I am trying to implement a Data logger for a Davis meteo station.
I used the server example, the problem is that when I remotely access a file the arduino seems to stop working
I stops logging and rading dataand serving.

If any of you can give any suggestions I'd be glad

Thanks,


#include <SdFat.h>
#include <SdFatUtil.h>
#include <Ethernet.h>
#include <SPI.h>
#include <SoftwareSerial.h>

//%%**%%%%**%%%%**%%%%**%%%%**%%%%**%% ETHERNET STUFF %%**%%%%**%%%%**%%%%**%%%%**%%%%**%%/
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 0, 174 };
EthernetServer server(80);

//%%**%%%%**%%%%**%%%%**%%%%**%%%%**%% SDCARD STUFF %%**%%%%**%%%%**%%%%**%%%%**%%%%**%%/
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile file;
SdFile myFile;
SdFat sd;

SoftwareSerial Davis(5, 3); // RX, TX
char FileName[13];
int t[50]={-1};
int i=1;
const int id=13;
int Min=-10;
int d[60];
long previousMillis;

  double temp;
  int hum;
  double vel_v=0.0001;
  int dir_v;
  double bar;
  double lluv=0.0001;
  double lluv_ac=0.0001;
  int rad;

// store error strings in flash to save RAM
#define error(s) error_P(PSTR(s))

void error_P(const char* str) {
 PgmPrint("error: ");
 SerialPrintln_P(str);
 if (card.errorCode()) {
   PgmPrint("SD error: ");
   Serial.print(card.errorCode(), HEX);
   Serial.print(',');
   Serial.println(card.errorData(), HEX);
 }
 while(1);
}

void setup() {
 pinMode(17, OUTPUT);
 pinMode(18, OUTPUT);
 pinMode(19, OUTPUT);
 Serial.begin(9600);
  Davis.begin(19200);
 //PgmPrint("Free RAM: ");
 //Serial.println(FreeRam());  

 // initialize the SD card at SPI_HALF_SPEED to avoid bus errors with
 // breadboards.  use SPI_FULL_SPEED for better performance.
 pinMode(10, OUTPUT);                       // set the SS pin as an output (necessary!)
 digitalWrite(10, HIGH);                    // but turn off the W5100 chip!

 if (!card.init(SPI_FULL_SPEED, 4)) error("card.init failed!");

 // initialize a FAT volume
 if (!volume.init(&card)) error("vol.init failed!");

 //PgmPrint("Volume is FAT");
 //Serial.println(volume.fatType(),DEC);
 //Serial.println();

 if (!root.openRoot(&volume)) error("openRoot failed");

 //  list file in root with date and size
 //  PgmPrintln("Files found in root:");
 //  root.ls(LS_DATE | LS_SIZE);
 //Serial.println();

 // Recursive list of all directories
 //PgmPrintln("Files found in all dirs:");
 //root.ls(LS_R);

 //Serial.println();
 //PgmPrintln("Done");

 // Debugging complete, we start the server!
 Ethernet.begin(mac, ip);
 server.begin();
}



void ListFiles(EthernetClient client, uint8_t flags) {
 // This code is just copied from SdFile.cpp in the SDFat library
 // and tweaked to print to the client output in html!
 dir_t p;
 
 root.rewind();
 client.println("<ul>");
 while (root.readDir(&p) > 0) {
   // done if past last used entry
   if (p.name[0] == DIR_NAME_FREE) break;
   // skip deleted entry and entries for . and  ..
   if (p.name[0] == DIR_NAME_DELETED || p.name[0] == '.') continue;
   // only list subdirectories and files
   if (!DIR_IS_FILE_OR_SUBDIR(&p)) continue;
   // print any indent spaces
   client.print("<li><a href=\"");
   for (uint8_t i = 0; i < 11; i++) {
     if (p.name == ' ') continue;
     if (i == 8) {
       client.print('.');
     }
     client.print((char)p.name);
   }
   client.print("\">");
   
   // print file name with possible blank fill
   for (uint8_t i = 0; i < 11; i++) {
     if (p.name == ' ') continue;
     if (i == 8) {
       client.print('.');
     }
     client.print((char)p.name);
   }
   
   client.print("</a>");
   
   if (DIR_IS_SUBDIR(&p)) {
     client.print('/');
   }

   // print modify date/time if requested
   if (flags & LS_DATE) {
      root.printFatDate(p.lastWriteDate);
      client.print(' ');
      root.printFatTime(p.lastWriteTime);
   }
   // print size if requested
   if (!DIR_IS_SUBDIR(&p) && (flags & LS_SIZE)) {
     client.print(' ');
     client.print(p.fileSize);
   }
   client.println("</li>");
 }
 client.println("</ul>");
}


// How big our line buffer should be. 100 is plenty!
#define BUFSIZ 64

void servidor()
{digitalWrite(17, HIGH);
 char clientline[BUFSIZ];
 int index = 0;

 EthernetClient client = server.available();
 if (client) {digitalWrite(17, HIGH);
   // an http request ends with a blank line
   boolean current_line_is_blank = true;
   // reset the input buffer
   index = 0;

   while (client.connected()) {
     if (client.available()) {
       char c = client.read();

       // If it isn't a new line, add the character to the buffer
       if (c != '\n' && c != '\r') {
         clientline[index] = c;
         index++;
         // are we too big for the buffer? start tossing out data
         if (index >= BUFSIZ)
           index = BUFSIZ -1;

         // continue to read more data!
         continue;
       }

       // got a \n or \r new line, which means the string is done
       clientline[index] = 0;

       // Print it out for debugging
       Serial.println(clientline);

       // Look for substring such as a request to get the root file
       if (strstr(clientline, "GET / ") != 0) {
         // send a standard http response header
         client.println("HTTP/1.1 200 OK");
         client.println("Content-Type: text/html");
         client.println();

         // print all the files, use a helper to keep it clean
         client.println("<h2> _- Archivos -_</h2>");
         ListFiles(client, LS_SIZE);
       } else if (strstr(clientline, "GET /") != 0) {
         // this time no space after the /, so a sub-file!
         char *filename;

         filename = clientline + 5; // look after the "GET /" (5 chars)
         // a little trick, look for the " HTTP/1.1" string and
         // turn the first character of the substring into a 0 to clear it out.
         (strstr(clientline, " HTTP"))[0] = 0;

         // print the file we want
         //Serial.println(filename);
         
         if (! file.open(&root, filename, O_READ)) {
           //client.println("HTTP/1.1 404 Not Found");
           //client.println("Content-Type: text/html");
           //client.println();
           client.println("<h2>File Not Found!</h2>");
           client.stop();
           return;
         }

         //Serial.println("Opened!");

         client.println("HTTP/1.1 200 OK");
         client.println("Content-Type: text/plain");
         client.println();

         int16_t c;
         while ((c = file.read()) > 0) {
             // uncomment the serial to debug (slow!)
             //Serial.print((char)c);
             client.print((char)c);
         }
         file.close();
         client.stop();
         return;
       } else {
         // everything else is a 404
         client.println("HTTP/1.1 404 Not Found");
         client.println("Content-Type: text/html");
         client.println();
         client.println("<h2>File Not Found!</h2>");
         client.stop();
         return;
       }
       client.stop();
       return;
     }
   }
   // give the web browser time to receive the data
   delay(2500);
   client.stop();
   digitalWrite(17, LOW);
 }
}



//////////////////////////////////////////////////////////////////////

void LeerFH()
{digitalWrite(19, LOW);
 Davis.println("GETTIME");
 delay(10);
 t[3]=0;
  for(i=1;i<=8;i++) // (Davis.available())
   {
    t=Davis.read();
    delay(5);
    }
   Davis.flush();
  i=1; // reiniciar el contador
  t[7]=t[7]-100; //ajuste al año
 
if(t[3]<0||t[3]>59||t[4]<0||t[4]>23||t[5]<1||t[5]>31||t[6]<1||t[6]>12||t[7]<0||t[7]>100)
   {delay(25);
   Davis.println("GETTIME");
   delay(10);
   t[3]=0;
    for(i=1;i<=8;i++) // (Davis.available())
     {t=Davis.read();
      delay(5);
     }
     Davis.flush();
    i=1; // reiniciar el contador
    t[7]=t[7]-100; //ajuste al año
   }
    if(t[3]<0||t[3]>59||t[4]<0||t[4]>23||t[5]<1||t[5]>31||t[6]<1||t[6]>12||t[7]<0||t[7]>100)
   {delay(50);
   Davis.println("GETTIME");
   delay(10);
   t[3]=0;
    for(i=1;i<=8;i++) // (Davis.available())
     {t=Davis.read();
      delay(5);
     }
     Davis.flush();
    i=1; // reiniciar el contador
    t[7]=t[7]-100; //ajuste al año
   }

  Serial.print("Fecha y hora=");
  Serial.print(t[7]+2000);
  Serial.print("-");
  Serial.print(t[6]);
  Serial.print("-");
  Serial.print(t[5]);
  Serial.print(" ");
  Serial.print(t[4]);
  Serial.print(":");
  Serial.print(t[3]);
  Serial.print(":");
  Serial.println(t[2]);
  //delay(10);
  digitalWrite(19, HIGH);

}

//////////////////////////////////////////////////////////////////////


wdvalenz

//////////////////////////////////////////////////////////////////////

void LeerSe()
{ digitalWrite(19, LOW);
 Davis.println("LOOP 1");
 delay(4);
  for (i=1;i<=60;i++)//Davis.available())
  {   d=Davis.read();
      delay(4);
  }
   Davis.flush();
   i=1;
   temp=0.5*((d[15]*256+d[14])-320)/9; // ºC
   hum=(d[35]);                        // %  
   vel_v=0.44704*d[16];                // m/s
   dir_v=d[18];                        // º
   bar=0.0254*(d[10]*256+d[9]);        // mmHg
   lluv=(d[44]*256+d[43])*0.2;         // mm/hr
   lluv_ac=(d[57]*256+d[56])*0.2;       // mm
   rad=(d[47]*256+d[46]);              // W/m2

//// **************************************************************************************
//for(i=1;i<=2;i++)
//{
 if(temp<-20||temp>100)
 {  Davis.println("LOOP 1");
   delay(4);
   for (i=1;i<=2;i++)
  {   d=Davis.read();
      delay(4);
  }
      temp=0.5*((d[15]*256+d[14])-320)/9; // ºC
 }
 if (hum<0||hum>100)
 {  Davis.println("LOOP 1");
   delay(4);
   for (i=1;i<=2;i++)
    {   d=Davis.read();
      delay(4);
    }
   hum=(d[35]); // %  
 }
 if (vel_v>50|| vel_v<0)
 {  Davis.println("LOOP 1");
 delay(4);
   for (i=1;i<=2;i++)
  {   d=Davis.read();
      delay(4);
  }
   vel_v=0.44704*d[16];
}
 if (dir_v>360||dir_v<0||dir_v==255)
 {  Davis.println("LOOP 1");
   delay(4);
     for (i=1;i<=2;i++)
      {   d=Davis.read();
          delay(4);
      }
    dir_v=d[18];  
}    
   if (rad==128||rad>10000||rad<0)
   {  Davis.println("LOOP 1");
         delay(4);
         for (i=1;i<=2;i++)
     {   d=Davis.read();
          delay(4);
      }
       rad=(d[47]*256+d[46]);
}
 if (lluv_ac<0)
 {  Davis.println("LOOP 1");
   delay(4);
     for (i=1;i<=2;i++)
      {   d=Davis.read();
          delay(4);
      }
 lluv_ac=(d[57]*256+d[56])*0.2;
 }
 if(lluv<0||lluv>2000)
 {  Davis.println("LOOP 1");
   delay(4);
     for (i=1;i<=2;i++)
      {   d=Davis.read();
          delay(4);
      }
 lluv=(d[44]*256+d[43])*0.2;
 }
 if(bar<0)
 {  Davis.println("LOOP 1");
   delay(4);
   for (i=1;i<=2;i++)
      {   d=Davis.read();
          delay(4);
      }
 bar=0.0254*(d[10]*256+d[9]);
 }
//}

////////////////////////////////////////////////////////// ASIGNAR VALORES INVALIDANTES 9999
if(temp<-20||temp>100)
   temp=9999;
if (hum<0||hum>100)
   hum=9999;
if (vel_v>50|| vel_v<0)
   vel_v=9999;
if (dir_v>360||dir_v<0||dir_v==255)
   dir_v=9999;
if (rad==128||rad>10000||rad<0)
  rad=9999;
if (lluv_ac<0)//||lluv_ac!=lluv_aca)
 lluv_ac=9999;
if(lluv<0||lluv>2000)
 lluv=9999;
if(bar<0)
 bar=9999;

//////////////////////////////////////////////////////////TERMINA VALORES INVALIDANTES



//********************************************************************************************
////////////////////////////////////////    

//Serial.println("Datos leidos");
//Serial.print("temp=");
//Serial.println(temp);
//Serial.print("hum=");
//Serial.println(hum);
//Serial.print("vel_v=");
//Serial.println(vel_v);
//Serial.print("dir_v=");
//Serial.println(dir_v);
Serial.print("bar=");
Serial.println(bar);
//Serial.print("lluv=");
//Serial.println(lluv);
//Serial.print("lluv_ac=");
//Serial.println(lluv_ac);
//Serial.print("dir_v=");
//Serial.println(dir_v);
//Serial.print("rad=");
//Serial.println(rad);
 //}
   Serial.flush();
   digitalWrite(19, HIGH);
}

//////////////////////////////////////////////////////////////////////
void Logger()
{
 if (sd.begin(4, SPI_FULL_SPEED))
 {   digitalWrite(18, LOW);
     sprintf(FileName, "%.2d%.2d%.2d%.2d.csv", t[7], t[6], t[5],id); //ddmmaa
     delay(5);
          if (!myFile.open(FileName, O_RDWR | O_CREAT | O_AT_END))
        { Serial.println("ERROR DE MEMORIA");
          digitalWrite(18, LOW);
          delay(200);
        }
     else
        { digitalWrite(18, LOW);
           myFile.print(t[4]);
           myFile.print(":");
           myFile.print(t[3]);
           myFile.print(":");
           myFile.print(t[2]);
           myFile.print(",");
           myFile.print(temp);
           myFile.print(",");
           myFile.print(hum);
           myFile.print(",");
           myFile.print(vel_v);
           myFile.print(",");
           myFile.print(dir_v);
           myFile.print(",");
           myFile.print(bar);
           myFile.print(",");
           myFile.print(lluv_ac);
           myFile.print(",");
           myFile.println(rad);
           myFile.close();
           delay(100);
           Serial.print("Almacenado en:");
           Serial.println(FileName);
           digitalWrite(18, HIGH);
        }

   }

else{
   Serial.println("ERROR DE MEMORIA");
   digitalWrite(18, LOW);
   delay(200);
   }
}
//////////////////////////////////////////////////////////////////////

void loop()
{
servidor();
unsigned long currentMillis = millis();
if(currentMillis - previousMillis > 50000||previousMillis==0)
{ previousMillis = currentMillis;
 LeerFH();
 
 if(Min!=t[3])
   {
     LeerSe();
     Logger();
     Min=t[3];
     t[3]=-1;
   }
}
delay(10);
}

wdvalenz

#2
Jul 10, 2013, 01:56 am Last Edit: Jul 10, 2013, 02:01 am by wdvalenz Reason: 1
I think the problem is in the servidor() function


SurferTim

If you are using an Uno, you are probably running out of SRAM. Try using the F() function on all your static strings to reduce your SRAM use. For example
Code: [Select]
Serial.println("This string is moved to SRAM before printing");
Serial.println(F("This string is printed directly from program memory"));

The same with the client.print() and client.println() calls also.

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